Water-gage gasket.



Patented Aug. I, I899.

H. K. GILBERT.

WATER GAGE GASKET.

(Application filed on. 16, 1898.)

(H0 MOdGl.)

NllED STATES PATENT OFFICE.

HENRY K. GILBERT, OF NIAGARA FALLS, NEW YORK, ASSIGNOR OF ONE IIALF TOCALVIB L. RANDALL, OF GIRARD, PENNSYLVANIA.

WATER-GAGE GASKET.

SPECIFICATION forming part of Letters Patent No. 630,047, dated August1, 1899.

Application filed October 18, 1898- Serial No. 693,893. (No model.)

To all whom it 'llbtl l/ cancer/1.;

Be it known that I, HENRY K. GILBERT, a citizen of the United States,residing at Niagara Falls, in the county of Niagara and State of NewYork,have invented certain new and useful Improvements in ater-Gages;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to certain new and useful improvements inwater-gages; and it pertains more particularly to means for preventingwearing or cutting away of the sighttube at the steam end. It is awell-known fact that the sight-tubes of water-gages will wear or becomecut away at the end where the steam acts thereon. It is true thatgaskets have been applied at this point, but heretofore they have failedto effectually serve the purpose for which they were intended, andnotwithstanding their presence the glass has worn away. I provide agasket which protects the glass from its upper end to a point below thenut which serves as a connection between the glass and the connectionwith the gage-cock, and the flange of the said gasket receives the endof such connection to form a tight packing at thispoint. I provide,further, a gasket which rests upon the end of the sight-glass and insome instances has a thinner portion extending down within thesight-glass, and upon this gasket is supported a small tube whichextends within the sight-glass, being held out of contact therewith andserving to protect the glass from wear upon the inner surface. It willthus be seen thatlthoroughly and effectually protect the glass at allpoints where it is lia-- ble to be worn or cut away, and thus the lifeof the glass is materially lengthened.

Other objects and advantages of'theinvention will hereinafter appear,and the novel features thereof will be specifically defined by theappended claims.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, form a partof thisspecification, and in which Figure 1 is a vertical section through aportion of a sight-glass of a water-gage, showing the application of myinvention. Fig. 2 is a perspective View of the upper portion of thesight-glass, with my improvements in position. Fig. 3 is a perspectiveview of my improved gasket removed.

Like letters of reference indicate like parts throughout the severalviews.

Referring now to the details of the drawings by letter, A designates aportion of a sight-glass of a water-gage of known construction, exceptas hereinafter specified with relation to the manner of protecting theupper end thereof.

B is my improved gasket. It comprises a flange portion a, from oppositesides of which extend the thinner portions 1), which are designed toembrace and closely hug the glass, as seen in Figs. 1 and 2, so as to befrictionally held thereupon. The under edge of this flange portion isrounded or beveled, as seen at c, to facilitate the application of thenut O, as will be readily understood. This gasket is preferably formedof a single piece, preferably of rubber, although other materials may beused. In practice this gasket is applied about the upper end of thesight-glass, as seen in Figs. 1 and 2, the upper end of the upper thinportion 1) being flush with the end of the sight-glass and the lower endof the lower thin portion 1) extending below the nut C; but it isevident that the length of these portions 1) may be varied as may bedeemed best. The nut O is applied, and the beveled lower edge 0 ofthe'gasket greatly facilitates this step, and the lower edge of theflange portion of'the gasket rests upon the inwardlyextending portion ofthe nut, as seen in Fig. 1, and when the connection is made with thetube D, which is screwed into the upperportion of the nut, the lower endof said tube will rest upon the upper portion of the flange of thegasket, as seen in Fig. 2, and thus a tight joint or packing isprovided. The thin portions of the gasket prevent contact of the metaltube D with the glass.

It will be seen that the central or flange portion of the gasket is ofmuch greater thickness than the portions which project from opa cadet?posite sides thereof, the said projecting portions being practicallythin, and the bore or opening of the gasket is slightly smaller than thetube in connection with which it is to be employed, so that when inplace upon the tube the thin portions will closely adhere to the tubeand be tightly held thereto frictionally.

In order to protect the end of the sightglass, I provide a gasket E,which rests upon the end of the tube, as seen best in Fig. 1, and alsobears against the end of the upper portion 1) of the gasket B, as alsoshown in said figure.

F is a tube, of brass or other suitable material, having its upper endsupported upon this gasket E in any suitable manner-such, for. instance,as by fianging the upper end of the tube F, as seen in Fig. 1-and thistube extends down within the sight-glass, as seen inFigs. 1 and 2, toprotect the inner; surface of such glass from wear or cutting away. Itis necessary that the tube F should be held out of contact with the sight-glass. for obvious reasons, and in order to insure this relation ofthese parts I form the gasket E with a thin depending portion 6, withinwhich the said tube F is disposed, as seen best in Fig. 1.

From the above description, especially when taken in connection with theannexed drawings, it will be seen that I fully protect the upper end ofthe sight-glass both upon theinside and outside and that the meansemployed for this purpose are easy of application and must necessarilylengthen the life of the glass.

Modifications in detail may be resorted to without departing from thespirit of the invention or sacrificing any of its advantages.

What I claim as new is 1. The combination with a sight-tube of awater-gage, of a gasket surrounding the same and a gasket-seated tubesupported upon the end thereof and extending within the same, as and forthe purpose specified.

2. The combination with the sight-tube of a water-gage,of a gasketembracing the same and having portions extending in opposite directionsfrom its flange, a gasket resting upon the end of the tube, and a tubedepending within the sight-tube and supported by the last-mentionedgasket, as and for the purpose specified.

3. The combination with the sight-tube of a water-gage, of a tubesuspended within the same, and gaskets protecting the end of thesight-tube'inside and outside, substantially as specified.

4. The combination with a sight-tube of a water-gage, of agasketsurrounding the same, a gasket resting upon the end of the said tube andhaving a portion extending within the tube, and a tube supported uponthe gasket on the end of the sight-tube and extending within the saidtube out of contact therewith, substantially as and for the purposespecified. In testimony whereof I affix my signature in presence of twowitnesses.

HENRY K. GILBERT. Witnesses:

ALEXANDER S. STEUART, E. H. BOND.

